/*
 * SPDX-License-Identifier: Apache-2.0
 *
 * The OpenSearch Contributors require contributions made to
 * this file be licensed under the Apache-2.0 license or a
 * compatible open source license.
 */

/*
 * Licensed to Elasticsearch under one or more contributor
 * license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright
 * ownership. Elasticsearch licenses this file to you under
 * the Apache License, Version 2.0 (the "License"); you may
 * not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
/*
 * Modifications Copyright OpenSearch Contributors. See
 * GitHub history for details.
 */

package org.opensearch.analysis.common;

import org.apache.lucene.analysis.Tokenizer;
import org.apache.lucene.analysis.core.WhitespaceTokenizer;
import org.opensearch.common.settings.Settings;
import org.opensearch.env.Environment;
import org.opensearch.index.analysis.AnalysisTestsHelper;
import org.opensearch.index.analysis.TokenFilterFactory;
import org.opensearch.test.OpenSearchTestCase;

import java.io.IOException;
import java.io.StringReader;

public class WordDelimiterTokenFilterFactoryTests extends BaseWordDelimiterTokenFilterFactoryTestCase {
    public WordDelimiterTokenFilterFactoryTests() {
        super("word_delimiter");
    }

    /**
     * Correct offset order when doing both parts and concatenation: PowerShot is a synonym of Power
     */
    public void testPartsAndCatenate() throws IOException {
        OpenSearchTestCase.TestAnalysis analysis = AnalysisTestsHelper.createTestAnalysisFromSettings(
            Settings.builder()
                .put(Environment.PATH_HOME_SETTING.getKey(), createTempDir().toString())
                .put("index.analysis.filter.my_word_delimiter.type", type)
                .put("index.analysis.filter.my_word_delimiter.catenate_words", "true")
                .put("index.analysis.filter.my_word_delimiter.generate_word_parts", "true")
                .build(),
            new CommonAnalysisPlugin()
        );
        TokenFilterFactory tokenFilter = analysis.tokenFilter.get("my_word_delimiter");
        String source = "PowerShot";
        String[] expected = new String[] { "Power", "PowerShot", "Shot" };
        Tokenizer tokenizer = new WhitespaceTokenizer();
        tokenizer.setReader(new StringReader(source));
        assertTokenStreamContents(tokenFilter.create(tokenizer), expected);
    }
}
